Stapling machine



May 24 1932- J. c. BLEVNEY 1,859,951 V STAPLING MACHINE Filed Nom-5.1929 3 Sheets-Sheet 1 INVENTOR.

A170' RNEY. 5

May 24, 1932.

J. C. BLEVNEY STAPLING MACHINE Filed Nov'. s. 1929 May 24, 1932.

' J. vC. BLEVNEY STAPLINQ MACHINE Filed News, 1929, s'sneets-shee; 3

Huggy:

. INVENTOR. mi aae ORNEK' PatentedjpMay 24, 1932` UNITED.- STATES JOHNc. BLEv'NEY, oF NEW NEW vom:

sTArLiNe MACHINE applicaaqalmea November s, 1929. serial No. 404,897. v

This invention relates, generally, to improvements in stapling or wirestitching machines; and the inventlon has reference, more particularly,to af machine operating with straight, cut to length, wire blanks,whereby said blanks are formed into staples, then punched or driventhrough the material to be bound thereby, and finally clinched over tosecure the same in holding relation to said material. l

This invention has for its principal object to provide a fully automaticmachine, of the kind above mentioned, which may be driven by hand orcontinuously driven by power if l desired; and, furthermore, thisinvention provides a novel and comparatively simple selffeeding machineadapted to form fastening staples from initially straight wire blanks,then punch the same through material to be ,m bound thereby, and finallyto clinch over the ends of the formed and inserted staple, all inproperly timed sequence. To this end the mechanism includes camiactuated staplel forming, staple driving and stapleclinching stapleblank feeding means cooperative therewith; the several cams controllingthe mate-` rial clamping and the staple forming, driv ing and clinchingdevices being rotatively -driverrand so related as to automatically timethe sequence of the several operations in-y volved.

This inventionvhassfor afurther'object to provide a stapling machinewhich is of comparatively low cost of production, the majority of theparts thereof being formed by metal stampings.

-Other objects of this invention, not .at this time more particularlyenumerated, will be clearly understood from the following detaileddescription of the same.

. An illustrative embodiment of this vinvention is shown in theaccompanying drawings,

in which z-f' n Fig. 1 is a side elevation of a stapling machine madeaccording to and embodying the principles of this invention; Fig. 2 is alongitudinal vertical section through the same, drawn on an enlargedscale; Figs. 3, 4, 5 and 5 6 are transverse sections, taken on line --aadevices, together with material clamping and clinching mechanism.

in Fig.- 2, and respectively showing various stages in the operation ofthe machine', Fig. 3 showing the normal initial osition of theseveraldevices of the same, ig. 4 the material clamping and staple formingoperations, Fig. 5 the staple driving operation, and Fig. 6 the stapleclinching operation.

Fig. 7 is a transverse section, taken on line 7-7 in Fig. 2; Fig. 8 is afragmentary horizontal section, taken on line 8-8 in Fig. V2; 60 Fig. 9is an enlarged fragmentary vertical section, illustratngthe manner ofretracting the staple forming anvil Iduring the staple drivingoperation; andFig. 10 is a transverse section, taken on line 10-10 inFig. 2.

Similar characters of' reference are employed in all of the hereinabovedescribed views to indicate corresponding parts.l

`Referring now to said drawings, the reference character 11 indicatesthe side or frame 510 'f plates of the machine. These plates arepreferably stamped out of sheet metal, and when mounted on a suitablebase '12, in laterally spaced apart relation, provide a housing for theoperative parts of the mechanism. The J5 housing thus formed includes anupper arm 13 and a lower arm 14, vertically spaced apart to provide vamaterial receiving space 15 therebetween. The .opposed margins of saidupper and lower arms 13 and 14 ma4 be 30 notched, as at 16, for thereception an adjustable disposition of material stop means 17. Thematerial stop means 17, as shown, is illustrative only, and may bevariously ,modified or otherwise formed as desired. 95

The upper arm 13 of the housing carries the staple forming and drivingmechanisms, whlethe lower arm 14 of the housing carries the materialclamping-means and the staple Mounted in the upper arm 13, toextendtransversely between the frame plates 11,

is a forward guide plate 18 and a rearward guide plate 19, said .plates18 and- 19 having 95 ears 20 at their corners to engage in notches 2 1formed in said frame plates 11, whereby said guide plates418 and' 19 areretained in assembled relation to the latter. The space between saidguide plates 18 and 19 provides 100 appear.

a vertical slideway within which are mounted the staple forming anddriving devices.

Mounted within thelower part of said arm 13 of the housing for rearwardyielding movement, against the tension of -a positioning spring 22, isananvil member 23. This anvil member 23 possesses a downwardly andforwardly inclined anvil face 24 of a width approximately the width ofthe staples desired to be formed. Said anvil 23 is slidably supported bya tail-piece 25 having lateral lugs 26 slidable in slots 27 formed inthe frame plates 11. The spring 22 is anchored on a cross-barl28, whichalso aids in holding the frame plates 11 in spaced assembled relation,and said spring 22 is connected with said tail-piece 25 by an anchorhook 29, or any other suitable fastening means. The guide-plates 18 and19 are suitably cut away at their lower portions to pass said anvil 23.

The staple forming means, which is cooperative with said anvil 23,comprises a vertically movable former plate 30 subdivided at its lowerportion to provide laterally 'spaced apart bender legs 31, which, on.operative descent of said former plate 30, straddle the anvil 23.Secured to the face of said former plate 30 and movable therewith, andalso shaped to correspond thereto, is a separator plate 32, havingchamfered lower mar-v ginal ends 33 extending slightly below or beyondthe extremities of said bender legsv 31, and the functions of which willsubsequently Secured to the upper end of said former plate 30, by anoit-setting yoke or connection 34, is a rearwardly off-set actuatorplate35. Said actuator plate 35 carries a stud 36 to cooperate with a formercam to be hereafter described. Suitably disposed springs 37 areinterconnected between the former plate 30 and frame plates 11 to biasthe former', and the separator plate 32 secured thereto, to normalinitial raised posit-ion.f

The staple driving means, comprises a driver or punch plate 38vertically and independ- -ently movable in the space 39 between the legs31 of the former plate 30, lthus being of a width approximately thewidth of the formed staple. and movable with said driver or punch plate38 is an anvil reti-actor plate 40. The lower end of said retractorplate projects slightly beyond the lower extremity of the driver orpunch plate 38 and is chamfered or beveled, as at 41 (see Fig. 9), toconform to and engagewith the inclined surface of the anvil 23. Securedto the driver or punch plate 38, andthe retractor plate 40 securedthereto, isa stud 42 to cooperate with a driver cam to be hereafterdescribed. The rearward Iguide plate 19 is centrally slotted, as at 43,

to permit unobstructed movement of said l stud 42 during verticalmovement of the parts carrying the same. Suitably disposed springs 44are interconnected between the Secured to the rear face of l frameplates l11 and an anchor bracket 45 carried by the driver and retractorplates to bias the latter to normal initial raised positions.

A wire blank supply magazine is detachably mounted in connection withthe upper arm 13 of thev housing provided by the frame plates 11, andthesame comprises a pair of laterally opposed channeled side members 46,suitably connected together by cross bars 47. The upper of said crossbars 47 is provided with suspension hooks 48 to removably engage over asupporting bar49 secured to and between the side frames 11. rlhe lowerend of the magazine is curved to enter through a slot 50 in the forwardguide plate 18 in opposition to the anvil 23, and so as to discharge thewire blanks 51 by gravity successively upon and across the anvil 23 andbeneath the nor-.

mally raised staple former and driver devices. A leaf spring 52anchoredon a cross bar 52', which is also secured to and between the frameplates 11, and which is arranged to yieldably -press the discharge endof the magazine into said operative blank delivery position. The wireblanks 51 are initially straightand cut to suitable length, according tothe size ofstatherefrom as the stapling machine is successivelyoperated.

Mounted in the lower arm 14. to extend transversely between the frameplates 11, is

`a forward guide plate 53 and a rearward guide plate 54, said plateshaving ears 55 at their corners to engage in notches 56. formed in saidframe plates 11, whereby sald guide plates 53 and 54 are retained i'nassembled relation to the latter. The space between said guide plates 53and 54 provides a vertical slideway within which are mounted thematerial clamping and staple clinching devices.

The material clamping means, comprises a vertically movable clampcarrier plate 57, having at its upperend a rearward extension 58terminating in a rearwardly off-set actuator plate 59. Said actuatorplate 59 carries a fixed roller stud 60 to cooperate with a y clampercam to be hereafter described. Fixed on the extension 58 at the upperend of said carrier plate'57, and so as to be exteriorlydisposedrelative to the lower arm 14 of the housing, is a horizontal clampmember 61, having a transverse slot 62 therein for purposes hereafterdescribed.

The staple clinching means comprises a pair of clincher dogs or levers63, whichare pivotally mounted, for vertical oscillation, on pivot studs64 which are in turn ailixed to laterally projecting ears 65 with whichthe upper end of said carrier plate 57 is provided.

The free ends of said clincher dogs or lev vers 63 extend one toward`the other, and are lboth normally engaged by the central lift camportion 66 of 'a clincher plate 67. Said clinchcr plate 67 is verticallymovable in a space between the forward guide-plate 53 and said carrierplate 57, and said clincher dogs or levers 63 are also' aligned in theplane of such space. The clincher plate carries a rearwardly projectingstud 68 which projects through 0 clearance slots 69 and 70 respectivelyprovided in said carrier plate 57 and said rearward guide plate 54, sothat such stud is operatively engageable by the clincher cam hereafterdescribed, The carrier plate 57 and clincher plate 67 are biased bygravity to normal downward initial positions. The clincher dogs orlevers 63 possess staple striking portions 63, which, when said dogs orlevers are actuated, project through the slot 62 of the clamp member 61to operatively engage and clinch over the free ends of the staple legs.

Mounted in bearings for extension through the upper arm 13 of thehousing is a rotatable cam shaft 71. Said bearings preferably comprisetransverse plates 72 to extend between the frame plates 11 of thehousing, said plates y72 having lugs 73 at their extremities engage-`able in slots 74 provided in said frame plates 11, whereby the platesare rigidly supported. Preferably a pair of such plates 72 havingoppositely projecting bearing sleeves 75, are arranged back to back soas together to form the bearing as a whole.

`Fixed on the forward end'of said cam shaft 71 is a former cam 76 toengage the stud 36 of the actuator plate 35; and also fixed on saidforward end of said c a'm shaft 71 is a driver cam 77 to engage the stud42 of the driver plate 38.

-Mounted in bearings for extension through the lower arm of said housing.is a rotatable cam shaft 78. The bearings for said cam shaft 78 arepreferably constructed and mounted in the same way as those for the cam1shaft 71,v and are identified as to their detail structure by the samereference characters. The cam shaft 78, however, is mounted so as to becapable of a limited vertical oscilla.

tion or play at its forward cam carrying end, for purposes presently tobe made clear. this endthe slots 79 in the frame plates l1 which areengageable by the lugs 73 of the.

rearward bearing are so shaped as to permit pivotal swingor oscillationof said .bearing 5 in vertical plane, while the slots80 in the frameplates 11 which are engageable by the lugs 73 of the forward bearing areelongated to permit of substantially vertical movement of said forwardbearing, so that at proper times the forward cam carrying end of saidcam-shaft 78 may yield downwardly against the tension of a relativelystiff leaf spring 81, which'is fixed between the frame plates 11 to bearor thrust upwardly against the forward bearing of said cam shaft 78.

tion is made for vhand o Fixed on the forward end of said cam shaft 78is a clamper cam 82 to engage the roller stud 60 of the material clampinmeans; and also fixed on said forward en shaft 78 is a clincher cam 83to engagethe stud 68 of said clincher plate 67. l

When the stapling machine of this inven v ration, the cam shafts 71 and78 may be driven by a rack and pinion actuating means. shown in thedrawings, such actuating means comprises a gear or pinion 84 fixed oncam shaft 71 and a similar gear or pinion 85-xed on the cam shaft 78.Vertically slidable between guide lugs 86, formed atthe linner side ofone yof the frame platesll, is a rack plate 87 which meshes with saidgears or pinions 84 and 85. 'The upper free end. of said rack plateprojects above the frame plates 11, and is provided with a hand plate88. Said rack- In one form, as P of said cam plate 87, and consequentlythe cam shafts and transmission means (not shown) from any.

suitable power source. To utilize the stapling mechanism as a wirestitching machine for binding pamphlets, and similar work, the

cam shafts may be completely rotatedandA the work shifted between thearms 13 and 14 of the housing, as will be obvious, ora series ofstapling mechanisms may be arranged to drive staples simultaneouslythrough the work. l

1 The novel stapling machine operates as folows The material to' bebound,yas e. g. a' plu-- rality of paper sheets 92, is inserted in theopening 15 between the housing arms 13l and 14, whereupon rotary motionis imp arted to the cam shafts 71 and 78, which operate together to inturn rotate the various cams controlling the effective movements of thematerial clamping, and staple forming, driving and clinching mechanisms.clamper cam 82 and the former cam 76 are so set on their respectiveshafts 71 and-7 8 The that they operate together during the initialstages of the rotation of said shafts. The clamper cam 82 leads theclincher cam 83, and consequently -the clamper cam 82 acts first toraise the 'clamp' plate 61so that the material 92 is clamped betweensaid clamp plate and the arm. 13 of thev housing' formed by the frameplates 11, while theclincher plate 67 remains'A retracted.

lasl

This initial movement of the clamp plate 61 relative to the clincherplate 67 allows the clincher dogs or levers 63 to dropv down preparatoryto their effective staple clinching strokes (see Fig. 4) lf, due to theAthickness of the sheets of material 92, the

' sequently the clincher plate yields equally downward with the clampercam, both cams ybeing fixed on the camshaft 78. Simultaneously with theoperation of the clamper cam, the former camA 76 on the cam shaft 71also operates to carry downward the former plate and separator plate 32,so that as the material is being clamped, a staple is being formed readyto be driven through the material. The wire blank magazine, prior to thedescent of the former plate 30, delivers,

by gravity, a wire blank 51 upon the anvil 23 (see Figs. 2 and 3). Theinclined face 24 of the anvil 23 is preferably provided with a slighttransverse -indentionforming a seat s (see Fig. 9 vmore-particularly)which sus- -tains the wire blank against the thrust of the bender legs31 of the former plate 30, and thus prevents untimely rearward yieldingof the anyil. The separator plate .32 being rigidly connected with the-former plate 30 partakes of thedescending movementof'the latter, andsaid separator plate is provided with the chamfered edges 33 whichslightly lead the ends of the bender legs 31 i-n such descent. Thechamfered edges of the separator plate thereby enter between a wireblank 51 deposited on the anvil and the stack vof wire blanks remainingin the magazine, and consequently said separator plate is interposedbetween the same sodas to hold back the supply of wire blanks while agiven wire blankA is being operatedv upon (see Fig. 9) As the formerplate 30 de.

scends under the thrust of the former cam 76, the bender legs 31 engagethe ends of the wire blank 51, which respectively project from oppositesides of the anvil, and thereupon bend downward such ends against thesides of the anvil, so as to form from the wire blank a U-shapedstaple-ready to be driven through ythe material 92 (see Fig. 3). The

'i former vcam 76 and 'driver cam 77 are relaj so that the former camleads the driver ca rn L suiiiciently to assure completion of the optively fixed in position on the cam shaft 71 erative stroke of theformer plate, and consequent formation of the staple, prior to anyoperative movement being transmitted to the driver plate 38. i

The material 92-having been clamped and the stapleyformed, the continuedrotation of the cam shafts 71 and 78 moves the peaks of the clamper andformer cams relative to the shafts 71 and 78 is such that driver camleads the clincher cam suficiently to assure completion of the operativestroke of the driver plate 38, prior to any operative movement lbeingimparted to the clincher means.

As the driver plate 38 is caused to descend, the anvil retractor plate40, which is rigidly fixed thereto, also descends. Said retractor platepossesses a beveled edge 41, which slightly leads the driver plate, andengages the inclined face 24-of the anvil 23, thus operating to thrustback or retract said anvil from the path of the staple, as the latterisengaged and driven downward by the driver plate 38 (see Fig. 9). Thedescent of the ldriver plate thus drives down the staple so that itslegs are caused to pierce and pass through the materials, so as to bethereupon disposed through the opening 62 of the clamp plate 61, and inthe path of movement of the clincher `dogs or levers 63 (see Fig. 5). Itwill be noted that the staple is entirely supported on all sides againstany displacement from its straight downwardly directed position whilebeing driven through the material 92, since lateral movement thereof isprevented by the bender legs 31, rearward tilting movement by theretractor plate and forward tilting movement by the separator plate 32.v

After the driver plate 38 completes its staple driving movement, theclincher cam 83 is timed to operatively engage the stud 66 of theclincher plate 67 to slide the lattervnpward. The upward movement ofsaid clincher plate 67 carries its cam portion 66 into liftingengagement'with the pivoted clincher dogs or levers 63, thereby swingingthe same upward. z The upward swing of the clincher dogs or levers 63carries their striking portions 63 against the outer sides of the legportions of the staple, depending from the material, thereby bendingsaid legs inward.- ly and upwardly against the underside of thematerial, thus clinching the staple in operative attached relation tosaid material (see Fig.'6).

When the stapling machine is hand operated by the rack and piniondevices,lthe

- several cams and devices operated thereby lerated thereby completionof the clincher cam movement effected by the time the rack reaches thebottom of its stroke, whereupon, by releasing the `rack, the spring 89will reverse the rotation of the cam shafts 71 and 78, and thus bringthe back to normal initial positions. If the stapling machine is powerdriven, continued complete rotation of the cam shafts 7 1 and 78 willlikewise bring the cams and devicesoptions.

l am aware that many changes could be made in the above describedconstruction and many afp arently widely different embodiments o t 'sinvention could be made without departing from the scope thereof, andconsequently it is intended that all matter con-v v tained in the abovedescription or shown in formed staple stock upon said anvil means,

staple forming means cooperative with said anvilmeans, staple drivingmeans, anvil retractor means connected with said driving means andhaving an end projected beyond the latter to engage the inclined face ofsaid v anvil means to retract the same progressively in advance of thedriving movement of said driving` means, staple clinching means, and.-

rotatively actuated cams arranged in operative timed relation to actuatesaid clamping means and said staple forming, driving and clinching meansin sequence.

2. lin a stapling machineV having a'housing providing upper and lowerspaced arms between which the material to bevboundv is inserted, amovable clamping means mounted in connection with said lower arm, an an.vil means mounted in connection with said upper arm, means to deliverunformed staple stock upon said anvil means, staple forming meansmountedin connection with said upper arm and cooperative with said.anvil means, staple driving means also mounted in connection with saidupper arm, anvil re tractor means connected with said driving means,staple clinching means mounted in connection with said lower arm,rotatively actuated cams mounted in said lower arm to actuate saidclamping and clinching means, and rotatively actuated cams mounted insaid upper arm to actuate said forming and driv ing means, said camsbeing arranged inoperative timed relation to actuate'said clamp-ving'means and said staple forming, drivmg and clinching means insequence.

back to normal initial posi-V 3. In a lstapling machine having a housingproviding upper and lower spaced arms between which the material to bebound is inserted, a movable clamping means mounted in connectionwithsaid lower arm, an anvil means mounted in connection with saidupper arm,means to deliver unformed staple stock upon said anvil means, stapleforming. means mounted .in connection with said upper arm andcooperative with said anvil means, staple driving means also mounted inconnection with said upper arm, v anvil retractor` means connected withsaid driving means, staple clinching means mounted in connection withsa1d lower arm, rotatively actuated cams mounted 1n said lower armv toactuate said-clamping and clinching means,

rotatively actuated cams mounted in said upper, arm to actuate saidforming and driving means, said cams being arranged in op erative timedrelation to actuate said clamp` 4ing means and said staple forming,driving means is in operative engagement with the material to be ound.`

4:, In' a stapling machine, retractable an-ll l.

vil means, means vto deliver straight wire blanks upon said anvil means,a vertlcally reciprocable former plate having bender legs to straddlesaid anvil means, a separator c plate movable with said formerplate toseparate succeeding wire blanks from the blank operativelydeposited onsaid anvil means,

a vertically movable driver plate inde endently slidable betweenthebender legs o said former late, an anvil retractor platemovable withsaid driver plate, means for clamping material to be bound subjeet'tothe insertion therethrough by said driver plate of a staple formed byvsaid former plate, means .to cllnch the so inserted staple, and means'to actuate said former plate and driver plate lin se uence.

5. n a stapling machine, a retractable anvil means, means to deliverstraight wire blanks upon said anvil means, a vertically reciprocableformer plate having bender legs to straddle said anvil means, aseparator plate movable with said former plate to separate succeedingwire blanks from the blank op-. deposited on said anvil means, a

erative] verticallyV movable driver plate independently slidable'betweenthe bender legs of said former plate, an anvil retractor platev movablewith said driver plate, a vertically movable clamp carrying vplatehaving clamp pieans to support material to be bound subisc ject tothedriving of a formed staple therethrough, staple clinching devices alsocarvertically movable driver plate independently slidable between thebender legs of saidformer plate, an anvil retractor'plate movable withsaid driver plate, a vertically movable clamp carrying plate havingclamp means to support material to be bound subject to the driving of aformed staple therethrough, staple clinching devices also cai"-A ried bysaid carrying plate, a vertically movable llift plate for actuating saidclinching devices, and rotatively actuated cams to operate said clampcarrying plate, former plate, driver plate and lift plate in timedrelation.

7 In a stapling machine, an yanvil means approximating the width of astapleA to be formed, a magazine to hold a stack of straight wireblanks-of predetermined length, said magazine being arranged tosuccessively .feed said blanks to said anvil means for transverselydisposed position thereon, a staple forming means having bender legs tostraddle said anvil, a separator platemovable with said staple formingmeans to separate the deposited blank from thosein the magazine ypreparatory to staple forming and driving operations, staple drivingmeans, anvil re-' tractor means movable with said driving means, meansto clamp material to be bound subject to driving a formed stapletherethrough, staple clinching means, and rotatively actuated camsarranged in operative timed relation to actuate said clamping means andstaple forming,driving and clinching 1 meansin sequence.

'8. In a stapling machine having a housing providing upper and lowerspaced .arms between which material to be bound'isgjinserted, aretractable anvil means in saidf'ipper arm, a -magazine to holda1stack`of straight wire blanks of predetermined length,

said magazine being arranged to successively feed said blanks to saidanvil means for transversely disposed position thereon, a ver- .vtically reciprocable former plate having bender legs to straddle saidanvil means, a-

separator plate movable with: said former plate to isolate the depositedblank from the supply thereof, a driver plate vertically andindependently movable between the bender legs of said former plate, ananvil retractor plate movable with said driver plate, movable meanssupported in said lower arm .for

means, and rotatively actuated cams for operating .said clamping means,former plate, driver plate and linching means in timed relation. .1 v,

9. -In a staplingmachine having a housing providing upper, andlowerspaced arms between which material to be bound is inserted, avretractable anvil means in said upper arm, a magazine to hold. a stackof straight wire blanks of predetermined length, said magazine beingarranged tofsuccessi-vely feed said blanks to lsaid `anvil ,means fortransversely disposed position thereon, avertically reciprocable formerplate having bender legs to straddle said anvil means, a separator platemovable with said former plate to isolate the deposited blank from thesupply thereof, a driver plate vertically and independently movablebetween the bender legs of said former plate, an anvil retractor platemovable ly actuated cams for operating said clamping means, formerplate, driver platel and clinching means in timed relation, a cam shaftmounted in said upper arm to `actuate the cams of operating said formerplate and driver plate a cam shaft. mounted in said lower arm to actuatethe cams of operating said clamping means and clinchin means, and springmeans for holding said latter shaft and its cams subject to downwardyielding movement when said clamping means is in operative engagementwith the material to be bound. Y

10. In a stapling machine having a housing providing upper and' lowerspaced'arms between which material to be bound is inserted, aretractable anvil means in said upper arin, a magazine to hold a stackof straight wire blanks of predetermined length, said 'magazine beingarranged to successively feed said blanks tosaid anvil means fortransversely disposed position thereon, a vertically reciprocable formerplate having bender legs to straddle said anvil means, a separator platemovablewith said former plate to isolate the deposited blank from thelsupply thereof, a driver plate vertically and independently movablebetween the bender legs of said' former plate, an anvil retractor platemovable with said driver plate, a vertically movable clamp carryingplate having clamp means to hold material to be bound, staple clinchingdevices pivotallycarried by said carrying plate, said clam means havingan opening through which said clinching devices operate, a verticallymovable lift plate for actuating said lift plate, and means foractuating said clamp means, former plate, driver plate and-lift plate intimed relation.

iso

nemen disposed blank from the supply thereof, a-

driver plate vertically and independently movable between the benderlegs of said former plate, an anvil retractor plate movable with saiddriver plate, a vertically movable clamp carrying plate having clampmeans to hold material to be bound, staple clinching devices pivotallycarried by said carrying plate, said clamp means having an openingthrough which said clinching devices 3, includin rack and pinion means,for operatin sai cam shafts. l

14. staplin machine as defined in claim 9, including rac and pinionmeans for operating said cam shafts.

' 15, A stapling machine as deined in claim 12, including rack andpinion means for operating sai'd cam shafts.

In testimon that I claim the invention set forth above I ave hereuntoset my hand this 4th dayl of November, -1929.

f JOHN C. BLEVNEY.

operate, a vertically movable lift plate for actuating said lift plate,and rotatively actuated cams for operating said clamp carrying plate andits clamp means, former plate, driver plate and lift plate in timedrelation.

12. In a stapling machine having a housserted, a retractable anvil meansin said upper arm, a magazine to 'hold' a stack of straight wire blanksof predetermined length,

I ing providing upper and lower spaced arms between which material to'bebound is insaid magazine being arranged to successively feed said blanksto said anvil means for transversely disposed position thereon, avertically reciprocable former plate having bender legs to straddle saidanvil means, a separator plate y movable with said former plate toisolate the,

4W disposed blank from the' supply thereof, a driver plate verticallyand 1nd -ipendently`A movable between the bender legs of said able withsai lformerv plate an anvil retractor late movd driver plate, avertically movable clamp carrying 'plate havin clamp means to holdmaterial to be boun staple clinching devices ivotally carried by saidcarrying plate, sai clamp means4 having an opening through which saidclinching devices operate, a vertically'movable lift plate Yfor.actuating said staple clinching devices rotatively actuated cams foroperating said clamp'carrying plate and its clamp means,l former plate,driver Aplate and lift late in` timed relation, a cam shaft mounte insaid upper arm to actuate the cams operating said former late'anddriver. plate, aocam shaft mounte in said lower arm to actuate the camso rating said clamp carrying late and saidli plate, andsprin'gmeansforolding said latter shaft and its cams subject to downward- Ayieldingmovement when' said clamping means is 1n o rative engagement with thematerial to be und. j

13. A 'stapling machine. as defined in claim lll.

